Printer&#39;s plate registering hook



Patented A ug- 1935 (I I 2,012,808 I II I ,I PRINTER/S PLATE REGlsTERlNG HooK CharIesFQDausmann, Hempstead, N. Y1; assignor .of one-lialf to FredW. Hoch, Brooklyn, N. Y."

1 Application February20,193 i,Serial No; 712,154.

' r The present invention relates-to printers plate registering hooks, and has for an object-topmvide certain improvements in the construction thereof for exerting a sensitive and bindingpres sure against the edgeof a plate and in theplane of t t J l I Another object of the present invention is to provide'a heck of this type which may be inount ed in a quad or block so that it may be assem 'bledin the usual" manner of plate hooks in a printers frame'orchase but which is provided with a-novel lever arrangement and pressure memher for advancing the hook in a substantially horizontal direction toward the plate by'the feeding or advancement of the pressure member against the lever sO-that the-hook isnot' sub i mity thereto, and the object 'ofgtliepresentinvention is toovercome' this'diflioulty' and provide hooks for securely holding the plates inproper registration without danger of lifting- 01* canting "the plates incident to the various angular resolution of pressureforces imposed on' t-he hook. l

More specifically, the -invention provides a quad or block for use a *printers'frame is -slida-bly ands' wiv elly mounted -a hook forengaging' aplateiithe hook being slid'able toward and from the plate withrespect to'theplane thereof; and to pivotally ihWnt'a-bell'cranklever fin the quad orblock in position 'with one 'arm to" engage the hook shank for sliding the 'same lengthwise of the quad-and againstthe plategand with a pressure member oi screw in the hook shank 'for engaging:thefother arm of the bell 'crank'lever'to swingtthelatteron itspivotalsupport in the qu'ad to advance thehmk;

With the foregoing andotherobjectsin view, the invention will bem'orefully described hereinanfter, and will be more particuj ly pointed out in the claims appendedh y- L34,

In the drawing, wherein like .SYmbol's; refer to like or corresponding .parts I throughout the sev- I Figure l. is a longitudinal section taken through a quad or block showing a'plate'r'egistering hook mounted therein according to the present invention. 1

Figure Zisa fragmentary sectional view taken through a portionot a'--printer-s frame" showing quads mounted on the printing bed and 'a por tion ofa printerisLplate' seated onzthe quads and clamped in position by the hook of ithisinvention.

- Figure 3:isa side elevation of a quad with a hook; of the present-invention mounted therein 5 and engaging a plate, the adjustment *beingidit- 'ferent from thatshown in Figure2t .v I v Figure 4 isa transverse section 'taken through the quad and hook substantiallyon'sthe line 4-4 of Figure'2." v r r 1' Figure 5 is a fragmentary seotion ta-ken through aportion of the printers frame showing typeand quads therein with a-sli'ghtly'modified form of the'ho'ok for use asa narrow margin hook'adapter between the plate and typeL -A l "Figure 6 is aitransversesection'taken through the same substantially on the line 6'QB--jof 'Figure5;and T Figure "711s a plan view showing the 'swivelling I movement of the hook bar-or jaw to enable an- 20 gular adjustment of the jawi- 5 Referring to the drawing, N'designatesaquad or block adapted, to carry a plate registering hook and 'which'comprises a pair'oi spaced sidewalls ll connected'tog'etherat one end by a webl2 25 arranged at; theinner or'lower corner and at I one end of the block; The other end of the block has the sidewalls connected together by a; *cam piece I3 whichconformsto the angular con figuration of the inner :or lower portion'of the 30 block; extends between" the walls I l for a desired I-jheigl'it; preferably; less tharr-one-half the-height fot "the block, and which has an upper cam sur face M which is inclined downwardly and ina wardly from the adjacent end of the'blockj The=sidewalls -llfare provided in their: inner: opposite sideswith a-pairofgrooves i 5 which "are disposed horizon-tally "with reference-tattle posi:

tionof the quad or block in'Figure Land which 1 preferably open through the opposite ends of the 5140 "walls l l; to form guide or trackway for the hook mom-her? The hook member comprises a cross bar -or--jaw=l6 disposed above the upper surface or edge'o'f theblock H) and which extends across the same, as shown-in Figure 4. This :bar '16 isprovidedat opposite'sideswith undercut or beveled edgesl 1 inclinedat a suitable angleto conform ;with and engage the edge por- Y 2-0 proportioned to slidably and swi velly fit between the side walls! l of the quad and which is-provided-at its lower end with. laterally extending circular flanges 21: for interlocking ongagement in-thegrooves or slot-s15, and which are 55 of sufficient bre'adth to engage the upper walls of the slots to hold the shank 20 from canting or tilting in the quad. The hook thus constructed is held for longitudinal movement in a straight= shown in Figure 5. 'The upper portion of the.

screw 22 hasan axial non-circular opening 24 therein for the reception of a; suitable tool adapted to be introduced downwardly into the shank 20 through an opening which extends through'ithe intermediate portion of the bar [6 andthrough the shank 20 itself and registers with the screw opening 24. v 4 1. For the purpose of. advancin'gthe hook in a; horizontal line. direction and in a, common plane parallel to the slots I5, a bell crank ,lever'is provided, the same being pivotally mounted at its angle upona. pin 26 which extends across and between the side walls ll near the lower ends thereof and ,toward one end of the block l0 remote from the camblock I3. One arm 21 of the bell crank lever, extends upwardly and isprovided with an inwardly projecting nose 28 suitably .rounded for. engagementagainstthe adjacent edge or portionof the shank 29 of the hook so as to transmit pressure to the hook at substantially a single point, the rounded nose 28 being adapted to slide lengthwise of the shank 20 during the advancement or movement of the bell crank lever.

The arm 21 is of sufficient length to dispose the pressure nose 28 of the lever neartheupper end ofthe shank and adjacent the bar l 6 so as to equalize the pressure to a large extentbetween the upper and lower ends of the hook and thus transmit the pressureof the bellcrank. lever against the hook in a plane parallel to thatof the plate H) or the upper surfaceoftheblockr The other arm 29 of the bell crank lever extends toward the opposite endof the block, the ,inneredgesor surfaces of the arms 21 and 29 being formed on a substantially continuouscurve of suitable radius to 1 receive ,thereagainst the lower rounded" end 23 of the pressurernember 22 so that upon downward turningof thescrewi or pressure member 22, the rounded'end thereoi will engage and ride upon the, innerrounded surfaces of the arms of the bell crank lever.

' arm .29 ay be-of substantially th length as the arm 21 so thatat all'adjustments of the hook lengthwise in'the block the arm. ZI'WHIQ be presented for engagement' with the pressure screw 22, the limit of such adjustment being shown in Figure 3, and wherein the arm 29 may escape the cam block 1 l3 when the hook is advanced to substantially the limit of its opposite end adjustment and up to the point for bringing in to action the cam'surface l4. i

of course the quad or block I0 may be mounted in various ways in a printers frameorchase; In

Figure 2 the block I0 is assembled with a number of other quads or blocks 130 to support the printers plate l9,' and thehook is so adjusted as to bind against the adjacent edge of the -plate l9 andhold ,itin proper register inthe frame. the printers plate I9 is shown as overlapping to a In Figure 2 large extent the upperisurface of the quad l8.

.In Figure 3 the plate 19 is shown *asoverlapping the quad I0 but to a slight extent. In this position it will be noted that the pressure member 22 is advanced downwardly through the shank 20 to a considerable extent and that it rides out on the outer end portion of the arm 29 of the bell crank lever. In this position the pressure arm 21 of the bell crank lever is swung downwardly and toward the opposite end of the quad l0 so as to follow up behind the hook shank and continuously exert a straight line pressure against the hook to cause it to bind in an edgewise direction against the plate l9.

' As a slight modification of the hook, the bar l6 may be of substantially narrow width, as shown in Figures 5 and 6, wherein one side of f the bar is of flat or vertical formation adapted to' engage against type 3| which is mounted on the printing'bed32 and which is also engaged by the quad H1. The plate 19 in this instance ex- =tends from adjacent quads over the quad I0 throughout substantially its entire length and the undercut surface or edge of the hook bar I6 interlockswith the correspondingly inclined edge of the plate l9. lnthisinstance the narrow bar I S" maybe mounted at the extreme outer edge of the shank 20, and the latter is reversed as to its pressure member mounting so that the pressure member 22 engages at its rounded lower end 23 against the cam surface I4 for forcing the hook inwardly along the guides or grooves I5. Y In bothinstances, the upper edge of the shank 20 lies flush with the upper edge of the quad [0 so as to engage fiat against theunderside of the printers plate l9. It will be also noted from Figure 6 that the narrow cross bar it may be relatively short so as to terminate in the planes of the outer opposite surfaces of the quad l0.

In Figure .7 is shown a plan view of the quad showing the swivelling movement of the hook bar to enable angular adjustment of the jaw. The

quad ID has spaced walls H and grooves IS. The hook bar 16 is provided with a circular shank 20, having flanges 2|, for engaging thegrooves or slots I5. An-opening 25 for the tool, and the ,b ar flfi has angular si desll, The bar or jaw .16 maybe angularly disposed and locked in the desired position.

It is obvious that various changes and modifications may be made in the details of construction and design of the above specifically described embodiment of this invention without departing from the spirit thereof, such changes and modifications being restricted only bythe scope of the following claims.

' What is claimedisz- 1. A printers plate registeringhook, compris- 'ing. a quad having anfopening therein, a bell crank lever pivoted in the opening in the quad, a hook for engagement with'the edge portion of a plate "and having a shank projecting into the opening and interlocking with the quad for sliding movement of the hook me plane parallel to the'plane of the upper surface of the quad, said jlever having onearmdisposed in the path of ;said shank, and a pressure device in the hook shank engaging the other arm of the lever for advancing the first arm thereof against the hook movement in the plane and against the edge of the plate."

havingan opening therein, a'hookmounted for .shank and binding the hook by a straight line Y sliding movement lengthwise in the opening of the quad, a lever pivotally mounted in said opening in the-quad and having an arm engaging said hook shank for advancing the same and having a second arm extending at an angle to the first arm, and pressure means disposed in the quad for engaging said arm of the lever for swinging the latter to advance the hook.

3. A printer's plate hook, comprising a quad,

a hook movably mounted therein, pressure means carried by the hook, and a rock member disposed in the quad andlengageable with the hook and the pressure means for transmitting the pressure into a straight line pressure against the hook. a

4. A printer's plate hook, comprising a quad having an opening therein, a plate engaging hook mounted for horizontal sliding movement in the quad, a pressure screw carried by the hook adapted to be advanced downwardly therefrom and a rockable member pivotally carried by the quad having a portion engaging the hoolganda second portion in the path of said-pressure screw for transmitting pressure from the latter to the, side of the hook. n r

5. A printer's plate hook, comprising a quad having an opening therein, a hook slidably mounted for longitudinal movement in thequad to engage the edge of a plate, aibell crank lever pivotally mounted in the opening in the quad with one end engaging the side of the hook and with its other end projecting beneath the shank of the hook, and a pressure screw mounted in the shank of the hook for adjustment therein against said other arm of thelever to swing the latter and exert a straight line pressure against the hook. I

6. A printer's plate hook, comprising a quad having an opening therein, a hook having a shank projecting into said opening and provided with guiding and anchoring flanges at its opposite sides, l said quad having grooves in its Opposite walls 7 receiving said flange to guide the hook in the quad, a pressure screw threaded in'fthe lower surface at its upper end directed toward said hook, a pressure screw mounted in threaded relation in the shank of said hook, and a screw engaging portion carried by said cam block in line with said screw for binding engagement therewith to advance the hook against a plate on the quad. I

8. A printers plate hook comprising a quad, a hook member slidably carried by the quad, a cam lever rockably carried by the quad and adapted upon rocking thereof to move said hook member relative to the quad, and pressure means carried by the quad and engageable with said cam lever to rock said lever. 7

CHARLES F. DAUSMANN.

f disposed in a plane substantially parallel to the upper edge of the quad, said quad having a cam block rockably mounted in one end with a cam. 

